When I was in airport prison on Sunday in Ezeiza, I asked the migraciones funcionario if Argentina was allowing tourists from the US in December he said it's not certain.
The ARG government plans to end officially the "cuarentena" in the entire country on Nov 29. At this point the entire country will move from ASPO to DISPO. This is the plan, subject to change. There have been many signals in the past week that this is their plan. We will know on a week, but that appears to be the case.